Question

Calcule a inversa das matrizes: a) = [ 2 5 −3 −4 ] b) = [ 6 4 2 5 ] c) = [ 1 −3 −6 0 4 3 −3 6 0 ] d) D = [ 3 0 0 −3 −4 0 8 5 −3 ]​

Answer 1

Resposta:

A)detA=2•(-4)-(-3)•5= -8+15=7

A'= 1/detA (-4 -5 3 2)=1/7 (-4 -5 3 2)=

-4/7 -5/7

3/7 2/7

B)detB=6•5-2•4=22

B'=1/detB (5 -4 -2 6)=1/22 (5 -4 -2 6)=

5/22 -4/22

3/22 6/22

5/22 -2/11

1/11 3/11

Explicação passo-a-passo:

DIFÍCIL ;-;